CN113671615B - High-frequency blue light shielding method - Google Patents
High-frequency blue light shielding method Download PDFInfo
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- CN113671615B CN113671615B CN202110960273.0A CN202110960273A CN113671615B CN 113671615 B CN113671615 B CN 113671615B CN 202110960273 A CN202110960273 A CN 202110960273A CN 113671615 B CN113671615 B CN 113671615B
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/20—Filters
- G02B5/22—Absorbing filters
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/20—Filters
- G02B5/22—Absorbing filters
- G02B5/223—Absorbing filters containing organic substances, e.g. dyes, inks or pigments
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Abstract
The invention discloses a high-frequency blue light shielding method, which is characterized in that colorless glass, quartz, hard polycarbonate and other substances with good transmittance and high hardness are used as materials to manufacture a screen protection container with certain specification, the length and the width of the screen protection container are adjusted according to a screen of a using device, the gap thickness of the screen protection container is 0.2-0.4cm, a container gap is filled with a light absorbing liquid capable of absorbing high-frequency blue light and sealed, and then the container filled with the light absorbing liquid capable of absorbing high-frequency blue light is placed in front of the screen of a mobile phone, a flat panel display, a liquid crystal display and the like. The light absorption liquid can be one or more of methyl orange, xylenol orange, bromophenol blue, alizarin yellow, curcumin and the like which are mixed according to a proportion, has good blue light absorption effect in a spectrum segment with the wavelength of 415-455nm, and has weak light absorption in other spectrum segments and good visual effect.
Description
Technical Field
The invention relates to the technical field of blue light prevention of electronic products, in particular to a high-frequency blue light shielding method.
Background
The high-frequency blue light is also called high-energy visible light (HEV), which is a blue light ray with a wavelength of 380-500nm and is the spectrum band with the strongest energy in the visible light. Wherein, the high-frequency blue light with the wavelength of 415-455nm has accumulated effect on retina to damage retina, which causes damage to human eyes.
In daily life, various novel artificial light sources, such as mobile phones, flat panel displays, liquid crystal displays, fluorescent lamps, LED lamps, bathroom heaters and other devices, can generate harmful high-frequency blue light when in use, and when the devices are used for a long time, the time of exposing eyes to the high-frequency blue light is greatly increased, and eye diseases such as vision degradation, cataract, blindness and the like can be caused.
At present, there are two common methods for shielding high-frequency blue light: one method is to plate a film capable of reflecting high-frequency blue light on the surface of the spectacle lens, and the film can block about 15% -35% of the high-frequency blue light; another method is that the pigment is permeated into the eyeglass lens by permeation method, and the pigment absorbs high-frequency blue light; these methods can shield high-frequency blue light to some extent, but have problems such as narrow spectrum band of high-frequency blue light shielding, small absorbance of high-frequency blue light, and the like, and do not achieve ideal effects.
Disclosure of Invention
The invention aims to design and develop a high-frequency blue light shielding method, wherein light absorption liquid is placed in front of a screen of electronic equipment, can absorb high-frequency blue light with the wavelength of 415-455nm, has wide light absorption spectrum range, weak absorption in other spectrum ranges and good visual effect.
The technical scheme provided by the invention is as follows:
a shielding method of high-frequency blue light comprises the following steps:
preparing a shielding container with a gap thickness of 0.2-0.4cm by using a light-transmitting material;
filling the light absorption liquid into a shielding container and sealing;
the preparation process of the light absorption liquid comprises the following steps:
the concentration was set at 2X 10 -3 methyl orange and concentration of 2X 10 mol/L -3 Preparing a mixed solution from bromocresol purple with mol/L according to a volume ratio of 1:1, and regulating the pH value of the mixed solution to satisfy the following conditions: the pH value is more than 3.0 and less than 4.0;
and thirdly, placing the shielding container on a screen of the electronic equipment to shield high-frequency blue light.
Preferably, the light-transmitting material is colorless glass, quartz or hard polycarbonate.
Preferably, the length of the shielding container is the same as the length of the electronic equipment, and the width of the shielding container is the same as the width of the electronic equipment.
Preferably, the light absorbing liquid is one or more of methyl orange, bromocresol purple, xylenol orange, bromophenol blue, alizarin yellow and/or curcumin.
Preferably, the concentration is 2X 10 -3 The preparation process of the methyl orange with mol/L comprises the following steps:
weighing methyl orange, placing into beaker, heating distilled water for dissolution, cooling to room temperature, transferring into volumetric flask, and metering volume with distilled water to obtain concentration of 2×10 -3 methyl orange in mol/L.
Preferably, the concentration is 2X 10 -3 The preparation process of the bromocresol purple of mol/L comprises the following steps:
weighing bromocresol purple, placing in a beaker, adding 95% ethanol for dissolution, transferring into a volumetric flask, and fixing volume with 95% ethanol to obtain a concentration of 2×10 -3 mol/L bromocresol purple.
Preferably, the mass of the weighed methyl orange is 0.066g.
Preferably, the mass of the weighed bromocresol purple is 0.11g.
Preferably, in the second step, the pH value of the mixed solution is adjusted by acetic acid.
The beneficial effects of the invention are as follows:
the shielding method of the high-frequency blue light designed and developed by the invention can absorb the high-frequency blue light with the wavelength of 415-455nm and has wide light absorption spectrum range; the absorbance in the spectrum band with the wavelength of 415-455nm reaches more than 0.8, and the light absorption effect is good; the absorption is weak in other spectrum segments, and the visual effect is good; the absorbance can be adjusted according to the light intensity of the screen, so that the method is convenient and flexible; the manufacturing is simple and the cost is low; the use is convenient; and the light absorption liquid is convenient to replace when losing efficacy.
Drawings
Fig. 1 is a schematic diagram of the light absorption effect of the high-frequency blue light shielding method according to the present invention.
Fig. 2 is a schematic diagram of absorption spectrum of methyl orange according to the present invention.
FIG. 3 is a schematic diagram of the absorption spectrum of bromocresol purple according to the present invention.
Detailed Description
The present invention is described in further detail below to enable those skilled in the art to practice the invention by reference to the specification.
As shown in fig. 1, the method for shielding high-frequency blue light provided by the invention comprises the following steps:
firstly, preparing a screen protection container 110 with a certain specification by taking substances such as colorless glass, quartz, hard polycarbonate and the like with high transmittance, high hardness and difficult deformation and the like as materials, wherein the length and the width of the screen protection container 110 are adjusted according to the specification of a screen of a using device, the screen protection container 110 is overlapped with the screen, the screen protection container 110 is of a structure with a gap, and the thickness of the gap is 0.2-0.4cm;
placing the light absorption liquid 120 capable of absorbing high-frequency blue light in the gap of the shielding container 110, filling the gap of the shielding container 110 with the light absorption liquid, and sealing the shielding container 110 without bubbles;
wherein, the light absorption liquid 120 for absorbing high-frequency blue light can be one or more of methyl orange, bromocresol purple, xylenol orange, bromophenol blue, alizarin yellow, curcumin and the like which are mixed according to a proportion, and has good light absorption effect in a spectrum segment with the wavelength of 415-455nm, and weak light absorption in other spectrum segments and good visual effect; whereby the absorbance can be adjusted according to the screen light intensity.
Taking methyl orange and bromocresol purple as examples, the absorption spectrum of the methyl orange and bromocresol purple at the wavelength of 400-600nm is drawn:
as shown in FIGS. 2 and 3, the concentration was 2X 10 -3 And (3) respectively measuring the absorbance of different wavelengths in a spectrum segment with the wavelength of 400-600nm by taking distilled water as a reference solution, establishing a rectangular coordinate system by taking the wavelength (lambda) as an abscissa and the absorbance (A) as an ordinate, drawing corresponding points of measured data (lambda and A) on the rectangular coordinate system, and connecting the points into a curve to obtain the absorption spectrum of the methyl orange and the bromocresol purple.
As is clear from the absorption spectrum of methyl orange and bromocresol purple, the absorbance is large in the spectral range of 415-455nm, and small in the spectral range of other wavelengths, the concentration is 2×10 -3 methyl orange and concentration of 2X 10 mol/L -3 mol/L bromocresol purple solution is prepared according to the following proportion of 1:1 volume ratio, and regulating the pH value of the mixed solution by acetic acid to satisfy the following conditions: the pH value is more than 3.0 and less than 4.0, and the light absorption liquid is obtained;
and thirdly, placing the shielding container 110 containing the light absorbing liquid 120 capable of absorbing high-frequency blue light on a screen of electronic equipment such as a mobile phone, a flat panel display, a liquid crystal display and the like to shield the high-frequency blue light, and when the electronic equipment is used, the high-frequency blue light emitted by the screen is absorbed by the light absorbing substance in the light absorbing liquid 120 when passing through the shielding container 110, so that eyes are prevented from being damaged by the high-frequency blue light.
Example 1
Weighing 0.11g bromocresol purple, placing in a beaker, adding 95% ethanol for dissolution, transferring to a 100mL volumetric flask, and fixing volume with 95% ethanol to obtain a concentration of 2×10 -3 mol/L bromocresol purple; weighing 0.066g methyl orange, placing into a beaker, heating distilled water for dissolution, cooling to room temperature, transferring into a 100mL volumetric flask, and fixing volume with distilled water to obtain a concentration of 2×10 -3 methyl orange in mol/L; respectively mixing the bromocresol purple and methyl orange solutions according to the volume ratio of 1:1, and regulating the solutions by acetic acidThe pH value is more than 3.0 and less than 4.0, and the mixture is placed in a shielding container with the thickness of 0.2 cm;
distilled water is used as reference liquid, the absorbance is measured to be 0.81-0.95 in the spectrum with the wavelength of 415-455nm, and the absorbance is measured to be 0.08-0.10 in the spectrum with the wavelength of 455-800 nm.
Example 2
Weighing 0.11g bromocresol purple, placing in a beaker, adding 95% ethanol for dissolution, transferring to a 100mL volumetric flask, and fixing volume with 95% ethanol to obtain a concentration of 2×10 -3 mol/L bromocresol purple; weighing 0.066g methyl orange, placing into a beaker, heating distilled water for dissolution, cooling to room temperature, transferring into a 100mL volumetric flask, and fixing volume with distilled water to obtain a concentration of 2×10 -3 methyl orange in mol/L; respectively mixing the bromocresol purple and methyl orange solution according to the volume ratio of 1:1, regulating the pH value of the solution to be less than 3.0 and less than 4.0 by acetic acid, and placing the solution in a screen protection container with the thickness of 0.3 cm;
distilled water is used as reference liquid, the absorbance is measured at the wavelength of 415-455nm and is 0.98-1.19, and the absorbance is measured at the wavelength of 455-800nm and is 0.12-0.15.
Example 3
Weighing 0.11g bromocresol purple, placing in a beaker, adding 95% ethanol for dissolution, transferring to a 100mL volumetric flask, and fixing volume with 95% ethanol to obtain a concentration of 2×10 -3 mol/L bromocresol purple; weighing 0.066g methyl orange, placing into a beaker, heating distilled water for dissolution, cooling to room temperature, transferring into a 100mL volumetric flask, and fixing volume with distilled water to obtain a concentration of 2×10 -3 methyl orange in mol/L; respectively mixing the bromocresol purple and methyl orange solution according to the volume ratio of 1:1, regulating the pH value of the solution to be less than 3.0 and less than 4.0 by acetic acid, and placing the solution in a screen protection container with the thickness of 0.4cm;
distilled water is used as reference liquid, the absorbance is measured at the wavelength of 415-455nm and is 1.65-1.93, and the absorbance is measured at the wavelength of 455-800nm and is 0.16-0.21.
Comparative example 1
Weighing 0.11g bromocresol purple, placing in a beaker, adding 95% ethanol for dissolution, transferring to a 100mL volumetric flask, and fixing volume with 95% ethanol to obtain a concentration of 2×10 -3 mol/L bromocresol purple; 0.066g of methyl orange is weighedPlacing into beaker, heating distilled water for dissolution, cooling to room temperature, transferring into 100mL volumetric flask, and fixing volume with distilled water to obtain concentration of 2×10 -3 methyl orange in mol/L; respectively mixing the bromocresol purple and methyl orange solution according to the volume ratio of 4:6, regulating the pH value of the solution to be less than 3.0 and less than 4.0 by acetic acid, and placing the solution in a screen protection container with the thickness of 0.2 cm;
distilled water is used as reference liquid, the absorbance is measured to be 0.72-0.94 in the wavelength range of 415-455nm, and the absorbance is measured to be 0.25-0.38 in the wavelength range of 455-800 nm.
Comparative example 2
Weighing 0.11g bromocresol purple, placing in a beaker, adding 95% ethanol for dissolution, transferring to a 100mL volumetric flask, and fixing volume with 95% ethanol to obtain a concentration of 2×10 -3 mol/L bromocresol purple; weighing 0.066g methyl orange, placing into a beaker, heating distilled water for dissolution, cooling to room temperature, transferring into a 100mL volumetric flask, and fixing volume with distilled water to obtain a concentration of 2×10 -3 methyl orange in mol/L; respectively mixing the bromocresol purple and methyl orange solution according to the volume ratio of 6:4, regulating the pH value of the solution to be less than 3.0 and less than 4.0 by acetic acid, and placing the solution in a screen protection container with the thickness of 0.2 cm;
distilled water is used as reference liquid, the absorbance is measured to be 0.65-0.82 in the wavelength 415-455nm spectrum, and the absorbance is measured to be 0.31-0.46 in the wavelength 455-800nm spectrum.
Comparative example 3
Weighing 0.11g bromocresol purple, placing in a beaker, adding 95% ethanol for dissolution, transferring to a 100mL volumetric flask, and fixing volume with 95% ethanol to obtain a concentration of 2×10 -3 mol/L bromocresol purple; weighing 0.066g methyl orange, placing into a beaker, heating distilled water for dissolution, cooling to room temperature, transferring into a 100mL volumetric flask, and fixing volume with distilled water to obtain a concentration of 2×10 -3 methyl orange in mol/L; respectively mixing the bromocresol purple and methyl orange solution according to the volume ratio of 1:1, regulating the pH value of the solution to be less than 3.0 and less than 4.0 by acetic acid, and placing the solution in a screen protection container with the thickness of 0.1 cm;
distilled water is used as reference liquid, the absorbance is measured to be 0.38-0.42 in the wavelength 415-455nm spectrum, and the absorbance is measured to be 0.04-0.05 in the wavelength 455-800nm spectrum.
Comparative example 4
Weighing 0.11g bromocresol purple, placing in a beaker, adding 95% ethanol for dissolution, transferring to a 100mL volumetric flask, and fixing volume with 95% ethanol to obtain a concentration of 2×10 -3 mol/L bromocresol purple; weighing 0.066g methyl orange, placing into a beaker, heating distilled water for dissolution, cooling to room temperature, transferring into a 100mL volumetric flask, and fixing volume with distilled water to obtain a concentration of 2×10 -3 methyl orange in mol/L; respectively mixing the bromocresol purple and methyl orange solution according to the volume ratio of 1:1, regulating the pH value of the solution to be more than 4.0 by acetic acid, and placing the solution in a screen protection container with the thickness of 0.2 cm;
distilled water is used as reference liquid, the absorbance is measured to be 0.62-0.71 in the wavelength 415-455nm spectrum, and the absorbance is measured to be 0.12-0.18 in the wavelength 455-800nm spectrum.
Comparative example 5
Weighing 0.11g bromocresol purple, placing in a beaker, adding 95% ethanol for dissolution, transferring to a 100mL volumetric flask, and fixing volume with 95% ethanol to obtain a concentration of 2×10 -3 mol/L bromocresol purple; weighing 0.066g methyl orange, placing into a beaker, heating distilled water for dissolution, cooling to room temperature, transferring into a 100mL volumetric flask, and fixing volume with distilled water to obtain a concentration of 2×10 -3 methyl orange in mol/L; respectively mixing the bromocresol purple and methyl orange solution according to the volume ratio of 1:1, regulating the pH value of the solution to be less than 3.0 by acetic acid, and placing the solution in a screen protection container with the thickness of 0.2 cm;
distilled water is used as reference liquid, the absorbance is measured at the wavelength of 415-455nm and is 0.97-1.21, and the absorbance is measured at the wavelength of 455-800nm and is 0.27-0.35.
In comparative examples 1 and 2, the absorbance measured in the wavelength range of 415 to 455nm was lower than that measured in examples 1 to 3 in the wavelength range of 415 to 455nm, and the absorbance measured in the wavelength range of 455 to 800nm was higher than that measured in examples 1 to 3 in the wavelength range of 455 to 800nm, which resulted in weak absorbance in the wavelength range of 415 to 455nm and weak absorbance in other spectral ranges, i.e., weak blue light shielding to electronic devices, and affected visual effects, thus changing the volume ratio of raw materials would decrease the degree of blue light shielding;
in comparative example 3, the absorbance measured in the wavelength range of 415 to 455nm and the absorbance measured in the wavelength range of 455 to 800nm were both far lower than those measured in examples 1 to 3, although the clarity was better, but they did not play a role in shielding blue light, so that lowering the thickness of the shield container would lower the degree of shielding of blue light;
in comparative example 4, the absorbance measured in the wavelength range of 415 to 455nm was lower than that measured in the wavelength range of 415 to 455nm in example 1, and the absorbance measured in the wavelength range of 455 to 800nm was higher than that measured in the wavelength range of 455 to 800nm in example 1, which resulted in weak absorbance in the wavelength range of 415 to 455nm and weak absorbance in other spectrum, i.e., weak blue light shielding to electronic devices, and affected visual effects, so that too high a PH value of the raw material would decrease the degree of blue light shielding;
in comparative example 5, the absorbance measured in the wavelength range of 415 to 455nm and the absorbance measured in the wavelength range of 455 to 800nm were both much higher than those measured in example 1, which resulted in shielding in the full spectrum and severely affected the visual effect.
The shielding method of the high-frequency blue light designed and developed by the invention can absorb the high-frequency blue light with the wavelength of 415-455nm, the absorbance of the high-frequency blue light in the wavelength of 415-455nm reaches more than 0.8, the light absorption effect is good, and the light absorption spectrum range is wide; the absorption is weak in other spectrum segments, and the visual effect is good; the absorbance can be adjusted according to the light intensity of the screen, so that the method is convenient and flexible; the manufacturing is simple and the cost is low; the use is convenient; and the light absorption liquid is convenient to replace when losing efficacy.
Although embodiments of the present invention have been disclosed above, it is not limited to the details and embodiments shown, it is well suited to various fields of use for which the invention is suited, and further modifications may be readily made by one skilled in the art, and the invention is therefore not to be limited to the particular details and examples shown and described herein, without departing from the general concepts defined by the claims and the equivalents thereof.
Claims (7)
1. A method of shielding high frequency blue light, comprising the steps of:
preparing a shielding container with a gap thickness of 0.2-0.4cm by using a light-transmitting material;
filling the light absorption liquid into a shielding container and sealing;
the preparation process of the light absorption liquid comprises the following steps:
the concentration was set at 2X 10 -3 methyl orange and concentration of 2X 10 mol/L -3 Preparing a mixed solution from bromocresol purple with mol/L according to a volume ratio of 1:1, and regulating the pH value of the mixed solution to satisfy the following conditions: the pH value is more than 3.0 and less than 4.0;
step three, placing the screen protection container on a screen of electronic equipment to shield high-frequency blue light;
and in the second step, the pH value of the mixed solution is regulated by acetic acid.
2. The method of shielding high-frequency blue light according to claim 1, wherein the light-transmitting material is colorless glass, quartz or hard polycarbonate.
3. The method of shielding high-frequency blue light according to claim 2, wherein the shield container has a length identical to a length of the electronic device, and the shield container has a width identical to a width of the electronic device.
4. The method for shielding high-frequency blue light according to claim 3, wherein said concentration is 2X 10 -3 The preparation process of the methyl orange with mol/L comprises the following steps:
weighing methyl orange, placing into beaker, heating distilled water for dissolution, cooling to room temperature, transferring into volumetric flask, and metering volume with distilled water to obtain concentration of 2×10 -3 methyl orange in mol/L.
5. The method for shielding high-frequency blue light according to claim 4, wherein said concentration is 2X 10 -3 The preparation process of the bromocresol purple of mol/L comprises the following steps:
weighing bromocresol purple, placing in a beaker, adding 95% ethanol for dissolving, and transferring toIn a volumetric flask, 95% ethanol is used for constant volume to obtain a concentration of 2×10 -3 mol/L bromocresol purple.
6. The method for shielding high-frequency blue light according to claim 4, wherein said weighed methyl orange has a mass of 0.066g.
7. The method for shielding high-frequency blue light according to claim 5, wherein the mass of said weighed bromocresol purple is 0.11g.
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| CN101376569A (en) * | 2008-07-29 | 2009-03-04 | 成都理工大学 | Preparation of glass coating liquid having ultraviolet shielding function |
| CN102401325A (en) * | 2011-07-12 | 2012-04-04 | 苏州昆仑工业设计有限公司 | Light filter made of organic material capable of reducing light-emitting diode (LED) blue light harm |
| CN104181617A (en) * | 2014-09-01 | 2014-12-03 | 江苏万新光学有限公司 | Anti-blue-light resin lens made from fluorescent masking agent |
| CN111116990A (en) * | 2019-11-14 | 2020-05-08 | 华南农业大学 | Ultraviolet-blue light absorbent, preparation method thereof and prepared ultraviolet-blue light absorbent material |
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2021
- 2021-08-20 CN CN202110960273.0A patent/CN113671615B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101376569A (en) * | 2008-07-29 | 2009-03-04 | 成都理工大学 | Preparation of glass coating liquid having ultraviolet shielding function |
| CN102401325A (en) * | 2011-07-12 | 2012-04-04 | 苏州昆仑工业设计有限公司 | Light filter made of organic material capable of reducing light-emitting diode (LED) blue light harm |
| CN104181617A (en) * | 2014-09-01 | 2014-12-03 | 江苏万新光学有限公司 | Anti-blue-light resin lens made from fluorescent masking agent |
| CN111116990A (en) * | 2019-11-14 | 2020-05-08 | 华南农业大学 | Ultraviolet-blue light absorbent, preparation method thereof and prepared ultraviolet-blue light absorbent material |
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